Possible rebuild a RAID-1 vol on a SAS 6/i controller using mdadm or dmsetup?
When we blow a SAS 6/I controller on a R710 and replace the motherboard, can we use mdadm or dmsetup to re-create our RAID 1 OS vol? How does this work? Do we install one of the disks as the primary, then let it rebuild the secondary? Or is it smart enough to know that the two disks already have identical content? Obviously, we'd have to boot off a rescue USB w/ mdadm or dmsetup on it. But that's not any big hurdle. Spike ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: Dumping the BMC/DRAC event log without installing a bunch of software on R410 Ubuntu 10
The DELL 'patches' will decode the SEL (for example showing the DIMM) Severity : Warning Date and Time : System Boot Description : System Software event: correctable ECC ( Bank 1 DIMM B ) was asserted ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Moving multiple PERC4e/Di arrays on PE2850
Hi, I currently have PowerEdge 2850's with the PERC4e/Di controllers (firmware 5B2D). They are configured with 6 disks, all 146 GB/U320SCSI as two arrays: Logical disk (LD) 0: two 146 GB RAID 1 (operating system: RHEL5.4) Logical disk (LD) 1: four 146 GB RAID 5 (customer data) I am looking to upgrade the operating system on these machines but need to keep logical disk 1 intact (post-upgrade). I was planning to do this by swapping out LD0 with another RAID1 pair from a staging machine with the new OS configured. (this idea was from a very successful run with the PERC5 and PERC6 series.) I first tried a straight swap of LD0; that resulted in the controller not seeing LD1 and I couldn't recover the array on LD1 (via recreating the RAID 5 array, without initializing). It appeared that the controller still initialized the disks as a part of the array creation process even after the "initialize disks" was unchecked at the time of creation. I reviewed the PERC4 manual and can confirm that if I ... - I shut machine down and removed all disks; - I powered up the machine with no disks, entered the controller configuration screen and cleared all arrays, - I plugged in the pair of disks with the operating system This worked as documented. But ... clearing the controller of all array configuration information and when I plugged in all disks, the controller only saw one array and wasn't able to detect the second array. Deleting and recreating the array resulted in the disks being initialized. I've tried all I know. Does anyone have any experience or ideas to suggest ? Or, is what I'm trying to do impossible with PERC4 series of controllers ? Or, is there an easier way to upgrade several hundred 2850's from RHEL3 to RHEL5 before RHEL3 becomes end-of-life on support ? :-) I'd appreciate any advice. Thanks in advance, Derek -- Derek Yuen University of Toronto ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: Dumping the BMC/DRAC event log without installing a bunch of software on R410 Ubuntu 10
cgm wrote: > > The ipmitool from Dell repos also decode the DIMMs etc (like OMSA does) > > ipmitool delloem sel list > > This is the DELL patched ipmitool, I suggest get the rpm from (or navigate > up for some RH version close to your linux distro ) > > http://linux.dell.com/repo/hardware/latest/platform_independent/rh50_64/ipmitool/ Given the issues (previously discussed on this mailing list) with the Dell "patches" to ipmitool, I wouldn't recommend that over the standard version, especially since the Dell-patched ipmitool is not needed to see the SEL (system event log), you can use the standard ipmitool sel list command to see this. The formatting is different, but I don't think that the delloem version really adds anything that important: [r...@sli ~]# ipmitool sel list 1 | 09/01/2010 | 18:21:16 | Event Logging Disabled #0x72 | Log area reset/cleared | Asserted [r...@sli ~]# ipmitool sel elist 1 | 09/01/2010 | 18:21:16 | Event Logging Disabled SEL | Log area reset/cleared | Asserted [r...@sli ~]# ipmitool delloem sel list Severity : Normal Date and Time : System Boot Description : System Board SEL: Event Log sensor for System Board, log cleared was asserted [r...@sli ~]# ipmitool sel help SEL Commands: info clear delete list elist get add time save readraw writeraw interpret [r...@sli ~]# ipmitool delloem sel help sel list When used without any arguments, entire contents of SEL are displayed first Displays first (least recent) count entries in SEL. Count of 0 will display all entries last Displays last (most recent) count entries in SEL. Count of 0 will display all entries If you're having trouble installing ipmitool on your Ubuntu system, you could also probably use the FreeIPMI ipmi-sel command to view the SEL. https://help.ubuntu.com/community/IPMI http://manpages.ubuntu.com/manpages/maverick/man7/freeipmi.7.html http://www.gnu.org/software/freeipmi/manpages/man8/ipmi-sel.8.html @alex -- mailto:alex.du...@mac.com ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: Performance of MD1220 on Perc H800 slower than MD1120 on Perc/6E
I wanted to update the list regarding this particular issue we had with MD1220's. We found that certain drives Dell ships with their MD1220's have a cache problem when performing random reads and writes. The particular drives in question are Seagate ST9300603SS which is a 2.5 inch SAS drive. The problem appeared to us when we were benchmarking random IO with a utility called sysbench. We had an XFS filesystem built on top of an LVM across 16 drives in a RAID-10 configuration. We would consistently see 25MB/s of random IO, power cycle all of the equipment, and then consistently see 48MB/s of random IO. Power cycling again would then result in a completely different benchmark for random IO. We didn't observe any issues with sequential IO though. Eventually Dell recognized that there really was an issue with these drives and shipped us replacement MBD2300RC drives. Our problems have now gone away on both MD1220's. From: Blake Hudson Date: Tue, 31 Aug 2010 15:22:14 -0700 To: Subject: Re: Performance of MD1220 on Perc H800 slower than MD1120 on Perc/6E From: Richard Ems Date: Wed, 18 Aug 2010 03:11:12 -0700 To: Marc Stephenson Cc: Subject: Re: Performance of MD1220 on Perc H800 slower than MD1120 on Perc/6E On 08/16/2010 09:59 PM, Marc Stephenson wrote: > Their next recommendation was to try installing RHEL 5 which I'm working > on now. Has anyone else seen performance problems on their MD1220's? Hi Marc, Any new performance values on RHEL 5 ? Why are you using sysbench? Have you tried other tools? We are getting a MD1200 and a H800 controller the next days, and I am very interested in your results. We are going to use also XFS. Your HDDs are 2.5", right? Aren't this drives slower than the 3.5" ones? Best regards, Richard Just FYI, the only 2.5" 300GB drives I can spec a power vault with are 10k RPM, while the only 3.5" 300GB drives (currently) are 15k RPM. 15k > 10k. When it comes to rotating magnetic disk drives, faster rotation is better. You can get 15k drives in the MD1220, but they're going to be smaller so you're going to need more if you want to keep the same capacity. There's nothing intrinsically slower about a 2.5" drive - in fact, 15k 3.5" drives use platters sized between 2.5" and 3". However, there is room for more platters in a 3.5" drive. Which means that there are less compromises between high capacity and high speed - you can have both in the 3.5" form factor. 2.5" drives seem to be either high capacity or high speed, but not both. --Blake ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: Dumping the BMC/DRAC event log without installing a bunch of software on R410 Ubuntu 10
This is the DELL patched ipmitool, I suggest get the rpm from (or navigate up for some RH version close to your linux distro ) http://linux.dell.com/repo/hardware/latest/platform_independent/rh50_64/ipmitool/ extract(rpm2cpio) and use the bin , you may need some missing libs, Maybe there is also a .deb but no ideea of the location ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: Dumping the BMC/DRAC event log without installing a bunch of software on R410 Ubuntu 10
Am Dienstag, den 28.09.2010, 14:56 +0530 schrieb Tapas Mishra: > Err http://us.archive.ubuntu.com/ubuntu/ lucid/universe ipmitool > 1.8.11-1ubuntu1 > 504 Gateway Time-out Looks like a network problem. Norbert ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
Re: Dumping the BMC/DRAC event log without installing a bunch of software on R410 Ubuntu 10
On Tue, Sep 21, 2010 at 12:57 AM, cgm <999...@gmail.com> wrote: > The ipmitool from Dell repos also decode the DIMMs etc (like OMSA does) > ipmitool delloem sel list I did it but did not worked apt-get install ipmitool Reading package lists... Done Building dependency tree Reading state information... Done Suggested packages: openipmi The following NEW packages will be installed: ipmitool 0 upgraded, 1 newly installed, 0 to remove and 137 not upgraded. Need to get 428kB of archives. After this operation, 1,139kB of additional disk space will be used. WARNING: The following packages cannot be authenticated! ipmitool Install these packages without verification [y/N]? y Get:1 http://us.archive.ubuntu.com/ubuntu/ lucid/universe ipmitool 1.8.11-1ubuntu1 [428kB] Err http://us.archive.ubuntu.com/ubuntu/ lucid/universe ipmitool 1.8.11-1ubuntu1 504 Gateway Time-out Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/universe/i/ipmitool/ipmitool_1.8.11-1ubuntu1_amd64.deb 504 Gateway Time-out E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
server rebooting frequently how to diagnose
I am having a small problem on my Power Edge server. It is PowerEdge R710. It is rebooting frequently I am having a virtuallization setup over it. Some one a long time back had told me about some way to make a log on power edge via a utility which can have some sort of dumps. Which I can send to Dell for analysis if any one is able to understand what I am saying then give me a link. Or if there is some other way to debug this? -- Tapas Blog http://mightydreams.blogspot.com ___ Linux-PowerEdge mailing list Linux-PowerEdge@dell.com https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
